atmosphere & climatology section 3 MCQ Questions & Answers Detailed Explanation

Answer: (b)

Mistral is a cold and dry strong wind that blows down from the north along the lower Rhone River valley toward the Mediterranean Sea in southern region of France.

Answer: (a)

Our atmosphere has five layers- Troposphere, Stratosphere, Mesosphere, Thermosphere and Exosphere. The exosphere is the outermost layer of the atmosphere showing altitude about from 700 km to 10000 km above sea level.

This layer gradually and gradually merges in outer space having no atmosphere.

Answer: (a)

An updraught or downdraught is the vertical movement of air as a weather-related phenomenon. Better known as air current, they can be caused by differences in temperature, pressure, or impurity concentration.

Temperature differences can cause air currents because warmer air is less dense than cooler air, causing the warmer air to appear 'lighter.' Rising air is associated with turbulence as it creates low pressure on the surface.

Answer: (a)

Answer: (c)

A tornado is a violently rotating column of air that is in contact with both the surface of the earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud. They are often referred to as twisters or cyclones, although the word cyclone is used in meteorology, in a wider sense, to name any closed low-pressure circulation.

Tornadoes come in many shapes and sizes, but they are typically in the form of a visible condensation funnel, whose narrow end touches the earth and is often encircled by a cloud of debris and dust.

Most tornadoes have wind speeds less than 110 miles per hour (177 km/h), are about 250 feet (76 m) across, and travel a few miles (several kilometres) before dissipating.

The most extreme tornadoes can attain wind speeds of more than 300 miles per hour (483 km/h), stretch more than two miles (3.2 km) across, and stay on the ground for dozens of miles (more than 100 km).

Answer: (c)